Stop mechanism for needle-motion of looms.



PATENTBD JULY 7, 1903. G. F. HUTGHINS.

STOP MECHANISM FOR NEEDLE MOTION OF LOOMS.

N0 MODEL.

APPLICATION FILED JUNE 20, 1902.

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UNITED STATES Patented July 7, 1903.

PATENT QFFICE.

GEORGE F. HUTCHINS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON doKNOlVLES LOO'M lVORKS, OF WORCESTER, MASSACHU- SETTS, A CORPORATION OFMASSACHUSETTS.

STOP MECHANISM FOR NEEDLE-MOTION OF LOOIVIS.

SPECIFICATION forming part of Letters Patent No. 733,207, dated July 7,1903.

Application filed June 20, 1902. Serial No. 112,50 (No model.)

To all whom it may concern:

Be it known that I, GEORGE F. HUTcHINs, a citizen of the United States,residing at \Vorcester, in the county of \Vorcester and State ofMassachusetts, have invented certain new and useful Improvements in StopMechanism for Needle-Motion of Looms, of which the following is aspecification.

My invention relates to the needle-motion of looms for weaving pilefabrics, such as Moquette or Axminster carpets or rugs, in which inweaving wide fabrics, as rugs, a long needle must be used, which isinserted through the shed and then withdrawn in the wellknown way, andmy invention more particularly relates to a supplemental mechanismadapted to be used in connection with the needle-motion above referredto to automatically indicate to stop the loom in case the needle for anyreason is not fully withdrawn from the shed on the beating up of thelayin the normal operation of the loom. If the needle remains in theshed upon the beating up of the lay, it will break out the warpthreadsand will do a great deal of damage before the loom will be stopped.

The object of my invention is to provide a supplemental mechanism ofsimple construction and operation to be used in connection with theneedle-motion referred to to automatically indicate to stop the loom incase the needle for any reason is not fully withdrawn from the shed onthe beating up of the lay in the normal operation of the loom.

By means of my supplemental mechanism, which consists, preferably, of amovable lever or finger which extends in the path of the needle and hasa positive motion at regular intervals to cause it to engage the needleif the needle extends over it on the beating up of the lay and be movedand operate through cooperating mechanism,which may be of any ordinaryand well-known construction, mechanism for stopping the loom as the laybeats up.

I have shown in the drawings my mechanism and the needle of theneedle-motion decached suflicient to illustrate the nature of myinvention and enable those skilled in the art to which my inventionbelongs to make and use the same.

Referring to the drawings, Figure 1 is a front View of mystop-indicating mechanism, showing the same in its inoperative positionand the needle in its inward position extending into the shed. Fig. 2shows the opposite position of the mechanism shown in Fig. 1 with saidmechanism in its operative position and the needle in its outwardposition or fully withdrawn from the shed. Fig. 3 corresponds to Fig. 2,but shows the needle in its inward position extending in the shed andengaging the indicating mechanism to cause it to operate, throughcoacting mechanism not shown, to stop the loom; and Fig. 4 is a sectionthrough the driving-shaft on line 4 4, Fig. 2, looking in the directionof arrow a, same figure.

In the accompanying drawings, 1 is the end of the raceway for the needle2. The raceway 1 is supported in a horizontal plane on stands (notshown) in any ordinary way. To the end of the racewayl is attached abracket or stand 3, which extends out from the end of the raceway in ahorizontal plane and acts to support the parts of my indicatingmechanism.

4 is a driven shaft, on which is fast a disk or circular plate 5, havingin this instance three cam-surfaces 5 on its periphery. A lever 6 iscentrally mounted and fast on a rockshaft or rod 7, and one end 6 ofsaid lever is adapted to engage the periphery of the camdisk 5 and isheld in engagement therewith in this instance by a spring 8, attached atone end to said lever 6 and at its other end to a stationary part. (Notshown.) The lever 6 has pivotally attached to its opposite end 6 thelower end of a vertically-moving rod 9. The upper end of the rod 9 hasbearings in the downwardly-extending portion 3 of the stand 3 and hasfast thereon a collar 10, adjustably secured thereto by a set-screw 11.

Upon a side projection 10 on the collar 10 is pivotally supported inthis instance an angle-lever 12, one arm of which has a knob or sideprojection thereon adapted to extend under and in the path of the needle2, and the other arm of said lever 12 is connected by a link orconnector 13 with one end of an arm of the angle-lever 14, pivoted on astud 15 on the stand or bracket 3. The other arm of the angle-lever 14has pivotally attached thereto the lower end of a connector 16, which isconnected with mechanism (not shown) to stop the loom when the connector16 is moved downwardly. A spring 17, attached at one end to theangle-lever let and at its other end to the stand 3, acts to hold thepivoted lever 12 in its raised position and also the connector 16 in itsraised position.

In the operation of the loom and the neodle-motion with which myindicating mechanism is adapted to be used there are three beats of thelay to every revolution of the cam-disk 5. In the normal operation ofthe loom the position of the cam-disk 5 relative to the lever 6 is suchthat as the needle 2 enters and is withdrawn from the shed the peripheryof the cam-disk 5 between the camsurfaces 5 will travel on the end ofthe lever 6, as shown in Fig. 1, and the rod 9, carrying the pivoted orindicating lever 12, will be stationary; but just as the needle 2 isfully withdrawn from the shed on the forward beat of the lay thecam-surface 5 will engage the lever G and rock said lever and raise therod 9 and the lever 12 with said rod, as shown in Fig. 2, so that theupper end of said lever 12 will extend in the path of the needle 2. Iffor any reason the needle 2 is not fully withdrawn from the shed on theforward beat of the lay, the raising of the rod 9 and theindicator-lever 12 thereon, as above described, will'cause the upper endof the lever 12 to engage the needle 2, extending over it, and theengagement of the lever 12 with the needle will, through connector 13,move the angle-lever 14: against the action of the spring 17 and movedown the connector 16, as shown in Fig. 3, and through coactingmechanism (not shown) stop the loom.

It will be understood that the details of construction of myimprovements (shown in the drawings and above described) maybe varied,if desired.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a needle-motion of a pile-fabric loom, the combination with theneedle, of a device adapted to be moved into the path of the needle andto be engaged and tilted by the needle, if the needle remains in theshed on the beating up of the lay, said device through cooperatingmechanism acting to stop the loom, substantially as shown and described.

2. In the needle-m otion of a pile-fabric loom, a lever or arm adaptedto be moved into the path of the needle and engage and be turned by theneedle, if it is not withdrawn from the shed on the beating up of thelay, and stop the loom through cooperating mechanism, substantially asshown and described.

3. In a needle-motion forpile-fabric looms, the combination with aneedle, a tiltable arm or lever, means for moving said arm or lever intothe path of the needle to engage a part of said arm or lever with theneedle and cause the arm or lever to be tilted by such engagement, andmeans connected to said arm or lever to cause the loom to stop when theneedle is not Withdrawn from the shed.

4. In a needle-motion for pile-fabric looms, the combination with theneedle of a tiltable arm or lever, a verticallymovable rod on which saidarm or lever is pivotally mounted and by which it is raised and loweredto and from the path of the needle, means for moving said rod, anddevices connected to said arm or lever for stopping the loom when thearm or lever engages the needle and is tilted thereby.

V GEORGE F. I-IUTOHINS. Witnesses:

JOHN C. DEWEY, M. HAAS.

